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ORIGINAL ARTICLE
Year : 2019  |  Volume : 6  |  Issue : 1  |  Page : 5-8

Microperimetric findings after vitrectomy for dense traumatic vitreous hemorrhage


Department of Ophthalmology, Faculty of Medicine, Kasr Al Ainy Medical School, Cairo University, Giza, Egypt

Correspondence Address:
Dr. Nehal M Samy El Gendy
43 Gameat El Dewal El Arabia Street, El Mohandeseen District, Giza 12411
Egypt
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/erj.erj_3_19

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Purpose: The purpose of this study was to evaluate the functional outcome after early and late surgical evacuation of traumatic vitreous hemorrhage (VH) due to blunt trauma. Patients and Methods: Cases who had already undergone pars plana vitrectomy for dense traumatic VH were investigated. Microperimetry (MP) using the OPKO spectral optical coherence tomography (OCT)/scanning laser ophthalmoscopy combination imaging system (OPKO instrumentation, LLC, USA, version 1.89) was done 6–8 months after surgery. Patients were divided into two groups according to the time of surgical interference: patients who were operated upon 6 weeks or less after the onset of hemorrhage (Group A) and patients who had VH for more than 10 weeks before surgery (Group B). Primary outcome included mean and fovea retinal sensitivity (mean retinal sensitivity [MRS], foveal retinal sensitivity [FRS]) and its correlation to timing of surgical interference. Secondary outcome included spectral domain-OCT findings such as epiretinal membrane, subretinal fluid, ellipsoid zone integrity, and central subfoveal thickness. Results: Twenty-three eyes were sorted to Group A and 26 eyes to Group B. The average age was 36.2 ± 3.8 years for Group A, compared to 35.2 ± 3.9 years for Group B (P = 0.4). The average duration of hemorrhage was 27.1 ± 7.3 days for Group A and 60.5 ± 6.7 days for Group B. FRS was significantly higher in Group A (19.2 ± 1.9 dB) compared to 17.7 dB ± 2.4 dB in Group B (P = 0.02). MRS was comparable between the two groups (P = 0.5). FRS and MRS were negatively correlated to duration r = -0.49, P <0.001, r = -0.07, P = 0.61. Conclusion: Delayed surgery affects FRS (6–8 months) after surgery even with the absence of structural changes. Persistence of such changes is recommended to be evaluated by further follow-up.


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